AlignIt LS Timing Cover Alignment Tool oil pressure The factory bypass check valve

The factory bypass check valve is a safety in case the oil filter gets restricted

Because of the high demand on the Big 3's

this tool resists wear and tear

allowing you to open or close the exhaust while the car is running so you can hear the difference in exhaust tone in real time

Why would you ever let unfiltered oil into your expensive LS engine

AlignIt LS Timing Cover Alignment Tool oil pressure The factory bypass check valveSimplify Your Engine Build Introducing the AlignIt LS Timing Cover Alignment Tool your ultimate solution for precision engineering and trouble free engine assembly. Designed specifically for LS engines, this tool ensures your timing cover is perfectly aligned, eliminating any chance of leaks and engine wear. Whether you're a seasoned mechanic or a passionate car enthusiast, save time and frustration by using this high quality tool. The AlignIt LS